One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,3)(9,10)(11,16)(12,13)(14,15)(18,22)(20,27)(23,28)(26,31)(5,6,7,8)(9,11)(10,13)(12,14)(15,16)(18,22)(19,25)(24,29)(26,31)(5,6)(7,8)(10,15)(11,12)(17,18,21,22)(19,23,25,28)(20,24,27,29)(26,30,31,32)(1,2,4,3)(9,12,14,11)(10,16,15,13)(17,19,21,25)(18,23,22,28)(20,26,27,31)(24,30,29,32)(1,3,4,2)(9,13,14,16)(10,11,15,12)(17,20,21,27)(18,24,22,29)(19,26,25,31)(23,30,28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.